Home / 309,884.49-427,645.85-172,059.75

Finding the Fourth Proportional to 309,884.49, 427,645.85 and 172,059.75

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Solution

The fourth proportional to 309,884.49, 427,645.85 and 172,059.75 is: 237,445.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,884.49 : 427,645.85 = 172,059.75 : x
  2. Step 2: Convert to fraction form
    309,884.49/427,645.85 = 172,059.75/x
  3. Step 3: Cross multiply
    309,884.49x = 427,645.85 × 172,059.75
  4. Step 4: Simplify right side
    309,884.49x = 73,580,637,179.24
  5. Step 5: Solve for x
    x = 73,580,637,179.24/309,884.49
  6. Step 6: Final answer
    x = 237,445.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.